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The new proposed routing scheme is called group-epidemic routing (G-ER). G-ER is designed on the basis of one DTN protocol called epidemic routing (ER). In G-ER, two strategies related to the unique characteristics of the group mobility have been proposed to greatly improve ER. The first is to treat each group as a single node and exchange packets between groups instead of individual nodes. Thus, the resource-consuming problem of ER could be much alleviated. In the meantime, exchanging packets between two groups could speed up the packet delivery. The second is the buffer sharing inside a group, which is supported by the cooperative nature in group mobility. Moreover, we specifically propose a group dynamic model for group mobility to realize group splitting and merging. The performance of G-ER is studied by extensive simulations and compared with ER and dynamic source routing (DSR). Results show that G-ER outperforms ER and DSR in different network scenarios even with group dynamics.<\/jats:p>","DOI":"10.1186\/1687-1499-2013-105","type":"journal-article","created":{"date-parts":[[2013,4,18]],"date-time":"2013-04-18T13:41:11Z","timestamp":1366292471000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Routing strategy in disconnected mobile ad hoc networks with group mobility"],"prefix":"10.1186","volume":"2013","author":[{"given":"Ling Fu","family":"Xie","sequence":"first","affiliation":[]},{"given":"Peter Han Joo","family":"Chong","sequence":"additional","affiliation":[]},{"given":"Yong Liang","family":"Guan","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2013,4,18]]},"reference":[{"key":"669_CR1","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1145\/313237.313248","volume-title":"Proceedings of the ACM International Workshop on Modeling and Simulation of Wireless and Mobile Systems","author":"X Hong","year":"1999","unstructured":"Hong X, Gerla M, Pei G, Chiang C: A group mobility model for ad hoc wireless networks. 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